include<bits/stdc++.h>

using namespace std; int main() {

int l,r;
cin >> l >> r;
int cnt = 0 ;
for(int i=l;i<=r;i++){
	int t = i;
    bool flag = true;
    while(t){
    	int digi = t % 10;
        t /= 10;
        if(digi == 0 || i % digi != 0){
        	flag = false;
            break;
        }
    }
    if(flag) cnt++;

}
cout << cnt;
return 0;

}